Hi there Textpipe Guru's

I have a problem for you all which I have been unable to solve ...
I want to be able to scan a document and update an acronym list and
the input document - here is a brief scenario.

Acronym List (Which is Input File 1):-
LOL : Laughs Out Loud
TLA : Three Letter Acronym


Document (Whis is Input File 2):-
This filter should detect all Three Letter Acronym in a document and
give an Acronym Table Output (ATO) which is an updated Three Letter
Acronym list.

OK, what I am aiming at is a filter which results in the
following .....

Acronym List becomes:-
ATO : Acronym Table Output
LOL : Laughs Out Loud
TLA : Three Letter Acronym

and Output File is:-
This filter should detect all Three Letter Acronym (TLA) in a
document and give an Acronym Table Output (ATO) which is an updated
TLA list.

NOTE: Any phrae with an Acronym (eg Three Letter Acronym) should only
be spelled out on the first occurence. Every subsequent occurence
should have only the Acronym (TLA).

It's a challenge !! First one to get it right wins a prize (Oh, and
the cheque is in the mail!).

Thanks guys (and girls)

Mike